[Amps] Acom 2000A arc fault

[CRISINA LAUWEREYS(p43a@setarnet.aw)]

Hi all

My Acom 2000A developed an arc fault right before the contest this weekend.
These are the symptoms:
- after heat up you can switch from stand by to operation
- when you TX it goes right away into protection mode with the predominant message "arc fault"
- sometimes it evens do that by just standing in operation mode without TX ing
- I get also the message "antenna relay closed it should be open" and "HV voltage to low 0.8 Kv"
- Readings in RX mode all seems to be OK (2.40 Kv HV, Mains 223V)

RF connectors, RCA TX connector, antenna, etc are all good.
I suspected initially the vacuum relay, but Acom says if I do not see a drop in RX when switching from stand by to operation it should be good.... ? There is no drop in RX

I got the same issue a couple of times during WPX last March, but at the time a simple reset got me going again without issues, a reset does not help now....

An email to Acom did not help much (I miss Val who helped me troubleshooting / repairing tremendously before) as they just send me a couple of repair shops in the US to contact. But shipping this beast out from here is a no-no for now.....

Any advice or tips to repair this highly welcome.

73's de P43A, Jean-Pierre